0 Members and 1 Guest are viewing this topic.
Nascar mandates that the engines run a minimum of 2 complete races or 1000 laps before they can be torn down, There are seal tags on them to prevent teams opening one up before then. No tag,no race. Consider 1000 laps at 9000 rpm. That's more abuse than probably a few years in the dunes.
Something to give thought to. https://blog.k1technologies.com/bearing-clearance-and-oil-viscosity-explained
I would think it would indicate a leak on the suction side allowing air into system.